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Texas Instruments LM5141-Q1 | Demoboard PMP15041
25W Automotive Start-Stop Reference Design Operating at 2.2 MHz
Overview
| Topology | Buck Converter |
| IC revision | E3 |
Description
Automotive 12V batteries typically operate in the range of 9V-16V. However this voltage can vary widely due to transient conditions such as cold crank and load dump. This reference design creates a well-regulated 25W (5V,5A) output, regardless of large input voltage transients, utilizing the LM5150-Q1 and LM5141-Q1. The LM5150-Q1 is implemented as a pre-boost, only switching when the input voltage is below 6.8V, and utilizes the inductor as a differential EMI filter when not switching. The LM5141-Q1 operates as a buck controller regulating the 5V output. Both devices switch at 2.2 MHz.
Features
- 2.8V minimum input voltage
- 25W output peak power (5V, 5A)
- 2.2MHz switching frequency
Typical applications
- Scanner
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | Q | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | Endurance (h) | Operating Temperature | IRIPPLE (mA) | RESR (mΩ) | ILeak (µA) | Ø D (mm) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 885012006057 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-CSGP MLCCs 50 V(DC) | 100 pF | ±5% | 50 | 0603 | -55 °C up to +125 °C | 1000 | – | 10 GΩ | NP0 Class I | 1.6 | 0.8 | 0.8 | 0.4 | 7" Tape & Reel | – | – | – | – | – | – | ||
 | 875105344009 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-PSLP Aluminum Polymer Capacitors | 82 µF | ±20% | 16 | 6.3 x 5.8 | -55 °C up to +105 °C | – | 8 | – | – | 5.8 | 6.6 | – | – | 15" Tape & Reel | 2000 | -55 °C up to +105 °C | 2200 | 35 | 400 | 6.3 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 885012006057 | SPEC | |
| 875105344009 | SPEC |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Tol. C | VR (V (DC)) | Size | Operating Temperature | Q | DF (%) | RISO | Ceramic Type | L (mm) | W (mm) | H (mm) | Fl (mm) | Packaging | Endurance (h) | Operating Temperature | IRIPPLE (mA) | RESR (mΩ) | ILeak (µA) | Ø D (mm) | Samples |
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